The Trefael Stone, standing in a large rectangular field north of the village of Nevern in west Pembrokeshire, until 2010, was considered to be a standing stone, one of a number that occupy this ancient landscape. Used as a cattle rubbing stone, it measures around 1.2 m in height and over 2 m in length and has on its southern face up to 75 cupmarks.

Secrets of the earliest Britons could be hidden in 5,000-year-old tomb

Archaeologists have discovered the remains of a Neolithic portal dolmen, one of Western Europe's oldest ritual burial chambered monuments, in an isolated field in Wales.

It is thought the tomb was built from giant boulders about 5,500 years ago. Its capstone bears a seemingly random pattern of dozens of circular holes gouged into its surface – symbols of Neolithic or Bronze Age ritual burial activity.